Toro Groundsmaster 3280-D Service Manual page 216

Assembling the Lift Control Valve (continued)
Hydraulic System: Service and Repairs
Use eye protection such as goggles when using compressed air.
1. Clean all control valve components with clean solvent and blow dry with
compressed air.
2. Replace all removed O-rings. Lightly lubricate new O-rings with clean
hydraulic fluid before assembly.
3. Install new O-rings into control valve spool bore.
4. Lubricate spool liberally with clean hydraulic fluid and carefully install into
control valve bore.
5. Coat spacer (item 13 in
(or equivalent) grease. Apply Loctite #242 (or equivalent) to threads of screw.
Install washer, spring, and spacer into valve and secure with screw. Torque
screw to 2.7 to 4.1 N∙m (24 to 36 in-lb).
6. Apply Loctite #242 (or equivalent) to threads of screws (item 7 in
7. Position gasket (item 3 in
end cap to valve with 2 screws with lock washers. Torque screws to 2.7
to 4.1 N∙m (24 to 36 in-lb).
8. Lubricate detent plunger (item 19 in
slide into control valve bore.
9. Install new O-rings (items 23 and 24 in
Loctite #242 (or equivalent) to threads of lockout seats. Install seats into
control valve. Torque seats to 24 to 27 N∙m (18 to 20 ft-lb).
10. Lubricate poppet (item 11 in
with clean hydraulic fluid and install into control valve bore.
11. Install adapter plug (item 14 in
new O-ring into control valve. Torque plugs to 47 to 54 N∙m (35 to 40 ft-lb).
12. Install new O-ring to detent plug (item 16 in
and spring with clean hydraulic fluid and install into detent plug.
13. Install detent plug assembly to control valve. Torque plug to 14 to 20 N∙m
(10 to 15 ft-lb).
14. If counterbalance valve was removed, carefully thread valve into control
valve housing (Figure
(35 to 40 ft-lb).
CAUTION
Figure 104), spring, and washer liberally with MPG-2
Figure 104) and end cap to control valve. Secure
Figure
Figure
Figure 104), poppet stop, and spring liberally
Figure 104) with new O-ring, and plug with
105). Torque counterbalance valve to 47 to 54 N∙m
Page 5–132
Figure
104) with clean hydraulic fluid and
104) to lockout seats. Apply
Figure 104). Lubricate detent ball
Groundsmaster
05138SL Rev B
104).
® 3280-D/3320